Ion Track Technology

PhysicsConsult

Reimar Spohr

PostHeaderIcon Abstract

Möglichkeiten und Grenzen bei der Herstellung von Kernspurfiltern aus Glimmer (in German). C. Riedel, R. Spohr; Ber. Bunsenges. Phys. Chem. 83(1979)1165-1168

Possibilities and Limitations for Ion Track Filter Production in Mica

The nuclear track technique offers the possibility of an aimed manufacture of hole structures with the following properties:
1. Each hole corresponds to exactly one particle track.
2. Statistically distributed holes of uniform probability density.
3. Predictable areal density, adjustable between 10^0 and 10^10 particles per cm^2.
4. Predictable hole diameter, adjustable between 60 Angstrom units and about 0.5 mm.
5. Narrow hole size distribution (5% areal dispersion).
6. Uniform hole length (at present attainable maximum is about 100 µm).
7. Uniform orientation of holes (attainable beam parallelity better than +-0.1 degree.
Taking mica as an example the influence of multiple holes on the properties of nuclear track filters is investigated. Upper limits for transmission losses in particle classification are given.